Improvement in attachments for sewing-machines



G.A.C0LT oN BLSRBABCQC Improvement In Attachments To 12mm AUG 15 1871UNITED STATES PATENT OFFICE.

GEORGE A. COLTON AND SYLVESTER I). BABCOCK, OF ADRIAN, MICHIGAN.

IMPROVEMENT IN ATTACHMENTS FOR SEWING-MACHINES.

Specification forming part of Letters PatentrNo. 118,109, dated August15, 1871.

To all whom t't may concern:

Be it known that we, GEORGE A. CoLToN and SYLvEsTER P. BABcocK,of'Adrian, in the county of' Lenawee and State of Michigan, haveinvented certain new and valuable Improvements in Sewing-MachineAttachments 5 and we do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesaine, reference being had to the annexed drawing making a part of thisspeciiication, and to the letters and figures of reference markedthereon.

Figure l of the drawing is a top view of our invention. Fig. 2 is a sideview of' the same. Figs. 3, 4, 5, 6, 7, 8, and 9 are details.

Our invention has relation to certain improvements in cord-weltingdevices and other attachments for sewing-machines; and consists in themethod of connecting the bed-plate and the detachable presser-plate,whereby they are rendered more steady; in the construction of the corderand method of attaching it to the tongues; and in the construction ofthe adjusting set-screw and the method of operating the same between twobearings formed by the bed-plate.

A ofthe drawing designates the bed-plate, provided with the gauge b,button c, and nut d. A slot, e, is formed at the bend between the iianchand the horizontal part of the plate for the introduction of thepresser-plate G, which is provided with a slot, s, in its end. A loop,h, serves to confine the presser-plate to the bed-plate, and aspring-catch, k, connects the two by rising into the slot s in the endof' the presser-plate. B represents the detachable fingers, secured tothe bed-plate by means of' a set-screw and the button c. D representsthe corder, which is attached to the tongues E by means of small lugs zz, which project upward and downward into small openings n formed in theupper and lower branches of the tongue near the bend. Prior to bendingthe tongues E a slot, y, is formed longitudinally, which, after it isbent, serves to divide the rear end vertically into two branches, whichpass on either side of the set-screw. Each of these branches isfurnished with two openings, a, one above and the other below, for thereception of the lugs z z. In the manufacture of the corder a plate, m,is first stamped or out out of sheet metal of the f'orm shown at Fig. 9.rlhe center is expanded into a rectangular form, while the ends areforked. The rectangular expansion serves, after the plate is bent, as agauge for the welt-cloth, while the forked ends extend to the rear oneach side of' the set-screw, and are attached to the tongues by the lugsz z. The cordway 'v consists of a tube of steel or other metal, rigidlyattached by solder or otherwise to the plate m. It is secured betweenthe upper and lower branches of the plate after it is bent, and extendsfrom front to rear at an angle of about forty-five degrees. Thedelivering end of the tube, from which the cord passes into theclothwelt, extends through the bend of the welt-cloth gauge q at the endthereof which lies next to the presser-plate. Attached to the side ofthe corder D, in rear of the welt-cloth gauge, is the lug zo, whoseperforation is provided with a f'emale-screw thread to receive theadjusting-screw a. This screw is provided with a collar, d, and worksbetween the lianch l) and the notched bearing or rest b', both beingf'ormed by bending up the metal of` the bed-plate.

By turning the screw a the corder is adjusted backward or forward as maybe required, while the rounded edge or bend ofl the welt-cloth gauge isalways kept parallel to itself, thereby preventing any turn or twist inthe material, and enabling the operator to feed it forward in a rightline to the needle. The object of the forked shape of the end of thecorder is now apparent.

A similar adj Listing-screw may be attached to a binder, H, Fig. 7, and, the forked shape being given to the rear end thereof, it may beplaced between the lingers and adjusted back and forth according torequirement in a similar manner to the corder above described. By meansof the little lug w, with its female screw, the adjusting-screw a may beattached to a hemmer also, and to any sewing-machine attachment whichoperates in an analogous manner.

All of the above-described devices, with the exception of the cord-tubeo, nut d, set-screw a, and lug w, can conveniently be made of sheetsmetal.

We do not claim, broadly, a removable presserplate attached to abed-plate, as we are aware that such a plate is an old device; but

What we claim as our invention, and desire to secure by Letters Patent,is-

l. In combination with the plate A, having loop h and catch k, theremovable presser-plate G provided With a slot or catch, s, for thepurpose speeied.

2. The eerder, constructed substantially as described7 and provided with:t set-screw 11a-ving a collar, o', in combination with the bed-pletehzwing the anch b and notched bearing b.

In combination with the bed-plate A having the bearings b b', thecombined tongues and e0rder herein described7 provided with theadjusting'serew a with its colla-r c, substantially as :md for thepurpose specified.

In testimony that We claim the above we have hereunto subscribed ournames in the presence of two Witnesses.

GEO. A. COLTON.

Witnesses: SYLVESTER P. BABCOGK.

C. B. JOHNSON, S. E. GRAVES.

